asyncrat | 2a465e1cff39d36c45dc0f9b28440411187ebe843e9311e2820804942d72e201

General

Target

94eb371cf65dc29a53fcf3bc0173b35e.exe
Size

45KB
MD5

94eb371cf65dc29a53fcf3bc0173b35e
SHA1

ad4ddf8884c805f86ec09063cf6653ec012ae941
SHA256

2a465e1cff39d36c45dc0f9b28440411187ebe843e9311e2820804942d72e201
SHA512

c6fba4eea2e88dd34390ac8b9a38578e0b83731fb6ef8a551fa4d1489cbc64bb3eab6c9dc7c3a7872c9e595b8d016898f25a5f3e1e3bc1ceca8019816f5f6248
SSDEEP

768:8u6cdTAYhbJWUh9Nzmo2qLfKjPGagAWOzjbFgX3i6BwXytKe+CANqlcDZ2j+:8u6cdTAur2yKTKTO3bCXS6Bw+z+7Fd2S

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

45.147.46.188:1604

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
abd.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x0009000000012266-13.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2808	abd.exe

Loads dropped DLL 1 IoCs

pid	Process
3032	cmd.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	abd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	94eb371cf65dc29a53fcf3bc0173b35e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2032	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2776	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2488	94eb371cf65dc29a53fcf3bc0173b35e.exe
2488	94eb371cf65dc29a53fcf3bc0173b35e.exe
2488	94eb371cf65dc29a53fcf3bc0173b35e.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2488	94eb371cf65dc29a53fcf3bc0173b35e.exe
Token: SeDebugPrivilege	2808	abd.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2488 wrote to memory of 2912	2488	94eb371cf65dc29a53fcf3bc0173b35e.exe	30
PID 2488 wrote to memory of 2912	2488	94eb371cf65dc29a53fcf3bc0173b35e.exe	30
PID 2488 wrote to memory of 2912	2488	94eb371cf65dc29a53fcf3bc0173b35e.exe	30
PID 2488 wrote to memory of 2912	2488	94eb371cf65dc29a53fcf3bc0173b35e.exe	30
PID 2488 wrote to memory of 3032	2488	94eb371cf65dc29a53fcf3bc0173b35e.exe	32
PID 2488 wrote to memory of 3032	2488	94eb371cf65dc29a53fcf3bc0173b35e.exe	32
PID 2488 wrote to memory of 3032	2488	94eb371cf65dc29a53fcf3bc0173b35e.exe	32
PID 2488 wrote to memory of 3032	2488	94eb371cf65dc29a53fcf3bc0173b35e.exe	32
PID 3032 wrote to memory of 2032	3032	cmd.exe	35
PID 3032 wrote to memory of 2032	3032	cmd.exe	35
PID 3032 wrote to memory of 2032	3032	cmd.exe	35
PID 3032 wrote to memory of 2032	3032	cmd.exe	35
PID 2912 wrote to memory of 2776	2912	cmd.exe	34
PID 2912 wrote to memory of 2776	2912	cmd.exe	34
PID 2912 wrote to memory of 2776	2912	cmd.exe	34
PID 2912 wrote to memory of 2776	2912	cmd.exe	34
PID 3032 wrote to memory of 2808	3032	cmd.exe	36
PID 3032 wrote to memory of 2808	3032	cmd.exe	36
PID 3032 wrote to memory of 2808	3032	cmd.exe	36
PID 3032 wrote to memory of 2808	3032	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\94eb371cf65dc29a53fcf3bc0173b35e.exe
"C:\Users\Admin\AppData\Local\Temp\94eb371cf65dc29a53fcf3bc0173b35e.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2488
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "abd" /tr '"C:\Users\Admin\AppData\Roaming\abd.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2912
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "abd" /tr '"C:\Users\Admin\AppData\Roaming\abd.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2776
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpB319.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3032
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2032
- - C:\Users\Admin\AppData\Roaming\abd.exe
    "C:\Users\Admin\AppData\Roaming\abd.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2808

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabD471.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpB319.tmp.bat

Filesize
147B

MD5
2ded8be1f94ef4d334bd9b2309419f18

SHA1
0a7cd8a8565c6e6c0a65275c5f5d48b934629b81

SHA256
01fa5c9bcaa5ad2336505df60423915fd2c9e8348d072c9ae1bd625d4c0039f4

SHA512
c53a678cc0d08c4ed2f3da705f5cac62ce09d0d85d72d125a7ecc5ba4480952b18af024f37644d6bc2de41f263c98971594efb37dc34df963b2d04a662f6f574

Download Submit
\Users\Admin\AppData\Roaming\abd.exe

Filesize
45KB

MD5
94eb371cf65dc29a53fcf3bc0173b35e

SHA1
ad4ddf8884c805f86ec09063cf6653ec012ae941

SHA256
2a465e1cff39d36c45dc0f9b28440411187ebe843e9311e2820804942d72e201

SHA512
c6fba4eea2e88dd34390ac8b9a38578e0b83731fb6ef8a551fa4d1489cbc64bb3eab6c9dc7c3a7872c9e595b8d016898f25a5f3e1e3bc1ceca8019816f5f6248

Download Submit
memory/2488-0-0x0000000074B1E000-0x0000000074B1F000-memory.dmp

Filesize
4KB

Download
memory/2488-1-0x0000000000800000-0x0000000000812000-memory.dmp

Filesize
72KB

Download
memory/2488-2-0x0000000074B10000-0x00000000751FE000-memory.dmp

Filesize
6.9MB

Download
memory/2488-12-0x0000000074B10000-0x00000000751FE000-memory.dmp

Filesize
6.9MB

Download
memory/2808-16-0x0000000000DF0000-0x0000000000E02000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads